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【单选题】
儿童最常见的出血性疾病是( )。
A.
血小板减少性紫癜
B.
血友病
C.
血管性血友病
D.
重度贫血
E.
自身免疫性溶血
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【多选题】19 人员考核的标准主要有 ( )( )( )( )()
A.
任务难度
B.
职务标准
C.
协调能力
D.
职能条件
E.
管理水平
查看完整题目与答案
【单选题】Both tea and coffee contain caffeine, an odorless, colorless ______ that is soluble in water and in alcohol.
A.
substance
B.
material
C.
matter
D.
object
查看完整题目与答案
【单选题】Predict the genotypes and phenotypes of the F 1 progeny of a cross between two colorless plants, one homozygous for A and the other homozygous for B .
A.
AAbb , colorless
B.
aaBB , colorless
C.
AaBb , colored
D.
AaBb , colorless
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【单选题】Sulfuric acid is a ______．
A.
Clear syrupy liquid with no odor
B.
Colorless-to-brown liquid with a choking odor when hot
C.
Colorless liquid with a pleasant fruity odor
D.
Whitish liquid with a faint，pleasant odor
查看完整题目与答案
【单选题】文件名“ABCD.DOC.EXE.TXT”的扩展名是______。
A.
ABCD
B.
DOC
C.
EXE
D.
TXT
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【单选题】Predict the phenotypic ratio of the F 2 progeny of a cross between two colorless plants, one homozygous for A and the other homozygous for B .
A.
3 colored : 1 colorless
B.
9 colored : 7 colorless
C.
9 colorless : 7 colored
D.
15 colorless : 1 colored
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【判断题】违反实体完整性规则时系统只能拒绝该操作
A.
正确
B.
错误
查看完整题目与答案
【判断题】违反实体完整性规则时系统只能拒绝该操作( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】Water is tasteless, odorless, and nearly colorless (it has a slight hint of blue). It is a【C1】______ that is essential to all known forms of life in its pure form. Water is【C2】______ on Earth. It exis...
A.
stance
B.
substance
C.
composition
D.
material
查看完整题目与答案
【单选题】The clear colorless liquid that falls as rain, fills lake and rivers, and is necessary for life
A.
287. The clear colorless liquid that falls as rain, fills lake and rivers, and is necessary for life to exist is______. A．oxygen
B.
petrol
C.
water
D.
Flood
查看完整题目与答案
相关题目：
【多选题】19 人员考核的标准主要有 ( )( )( )( )()
A.
任务难度
B.
职务标准
C.
协调能力
D.
职能条件
E.
管理水平
查看完整题目与答案
【单选题】Both tea and coffee contain caffeine, an odorless, colorless ______ that is soluble in water and in alcohol.
A.
substance
B.
material
C.
matter
D.
object
查看完整题目与答案
【单选题】Predict the genotypes and phenotypes of the F 1 progeny of a cross between two colorless plants, one homozygous for A and the other homozygous for B .
A.
AAbb , colorless
B.
aaBB , colorless
C.
AaBb , colored
D.
AaBb , colorless
查看完整题目与答案
【单选题】Sulfuric acid is a ______．
A.
Clear syrupy liquid with no odor
B.
Colorless-to-brown liquid with a choking odor when hot
C.
Colorless liquid with a pleasant fruity odor
D.
Whitish liquid with a faint，pleasant odor
查看完整题目与答案
【单选题】文件名“ABCD.DOC.EXE.TXT”的扩展名是______。
A.
ABCD
B.
DOC
C.
EXE
D.
TXT
查看完整题目与答案
【单选题】Predict the phenotypic ratio of the F 2 progeny of a cross between two colorless plants, one homozygous for A and the other homozygous for B .
A.
3 colored : 1 colorless
B.
9 colored : 7 colorless
C.
9 colorless : 7 colored
D.
15 colorless : 1 colored
查看完整题目与答案
【判断题】违反实体完整性规则时系统只能拒绝该操作
A.
正确
B.
错误
查看完整题目与答案
【判断题】违反实体完整性规则时系统只能拒绝该操作( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】Water is tasteless, odorless, and nearly colorless (it has a slight hint of blue). It is a【C1】______ that is essential to all known forms of life in its pure form. Water is【C2】______ on Earth. It exis...
A.
stance
B.
substance
C.
composition
D.
material
查看完整题目与答案
【单选题】The clear colorless liquid that falls as rain, fills lake and rivers, and is necessary for life
A.
287. The clear colorless liquid that falls as rain, fills lake and rivers, and is necessary for life to exist is______. A．oxygen
B.
petrol
C.
water
D.
Flood
查看完整题目与答案